Journal papers

Revealing unexpected uses of space by wintering Aquila pomarina: how does satellite telemetry identify behavior at different scales?
2015

Journal of Avian Biology 46: 1-10

Ranging behaviour of Cape Vultures Gyps coprotheres from an endangered population in Namibia
2007

Bird Conserv. Int. 17: 331-339

Observations on the movements of adult Cape vultures in Central Namibia
2005

Lanioturdus 38:16-20

Fathers with highly demanding partners and offspring in a semidesert environment: energetic aspects of the breeding system of Monteiro’s Hornbills (Tockus monteiri) in Namibia
2003

Auk 120: 866–873

Satellite tracking of two Lesser Spotted Eagles, Aquila pomarina, migrating from Namibia
2001

Ostrich 72: 35-40

Year-round movements of a Wahlberg’s Eagle Aquila wahlbergi tracked by satellite
1995

Ostrich 66:135-140

A critical review of cartwheeling flights of raptors
1993

Ostrich 64: 13-24

The population dynamics of rodents at Settlers, Transvaal, South Africa
1992

Zeitschrift fur Säugertierkunde 57: 238-247

Hunting behaviour of Blackshouldered Kites in the Americas, Europe, Africa and Australia
1989

Ostrich 60: 1-12

Wing areas, wing loadings and wing spans of 66 species of African raptors
1989

Ostrich 60: 35-42

Habitat preferences, population size, food and breeding of six owl species in the Springbok Flats, South Africa
1989

Ostrich 60: 183-190

Population biology and breeding success of Blackshouldered Kites Elanus caeruleus
1989

In Meyburg B-U & Chancellor RD (Eds). Raptors in the Modern World. World Working Group on Birds of Prey, Berlin, London & Paris: 211-225

The status and biology of the Peregrine in the Afrotropical Region
1988

In Cade TJ, Enderson JH, Thelander CG & White CM (Eds). Peregrine Falcon populations: their management and recovery. Peregrine Fund: Boise, Idaho, pp 297-306

Organochlorine residues and egg-shell thinning in southern African raptors
1988

In Cade TJ, Enderson JH, Thelander CG & White CM (Eds). Peregrine Falcon populations: their management and recovery. Peregrine Fund: Boise, Idaho: 439-447

Communal roosting and feeding conditions in Blackshouldered Kites
1988

Ostrich. 59: 73-75

Wing areas and other dimensions of Greater and Lesser Flamingos
1988

Cimbebasia 10: 71-73

Sexual size dimorphism and roles in raptors - fat females, agile males
1986

Durban Musuem Novitates 13:321-336

The timing of breeding in Blackshouldered Kites in southern Africa
1984

Proceedings of the 5th Pan-African Ornithological Congress

An evaluation of the use of tritium for estimating daily energy expenditure for wild Blackshouldered Kites Elanus caeruleus and Greater Kestrels Falco rupicoloides
1984

Proceedings of the 2nd Symposium on African Predatory Birds

Social behaviour and dispersion of the Blackshouldered Kite
1983

Ostrich 54: 1-18

The feeding ecology of the Blackshouldered Kite Elanus caeruleus
1982

Durban Museum Novitates 13: 75-116

Notes on the small mammals of the Springbok Flats, Transvaal
1982

South African Journal of Zoology 17: 197-201

Movements of prions Pachyptila sp. and low pressure systems at Marion Island
1981

Proceedings of the Symposium on Birds of the Sea and Shore

Weights of southern African raptors and owls
1979

Durban Museum Novitates 12: 73-81

Other reports

Cape Vulture behaviour recorded using satellite transmitters
2008

Assorted unpublished reports, 2006 to 2008